The nominees for song of the year include some of the year's biggest hits. You couldn't go anywhere without hearing "Despacito" this summer. Meanwhile, Julia Michaels' debut single "Issues" became a smash hit. Jay-Z and Bruno Mars each had smash hits with "4:44" "That's What I Like." Plus, Logic's "1-800-273-8255" addressed an important issue and reminded us that we are never alone.